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blender/intern/boolop/intern/BOP_Merge2.cpp
Nathan Letwory bd610e942a doxygen: intern/boolop tagged
2011-02-25 10:32:33 +00:00

950 lines
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/*
*
* $Id$
*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
* All rights reserved.
*
* The Original Code is: all of this file.
*
* Contributor(s): Marc Freixas, Ken Hughes
*
* ***** END GPL LICENSE BLOCK *****
*/
/** \file boolop/intern/BOP_Merge2.cpp
* \ingroup boolopintern
*/
#include "BOP_Merge2.h"
#ifdef BOP_NEW_MERGE
static void deleteFace(BOP_Mesh *m, BOP_Face *face);
/**
* SINGLETON (use method BOP_Merge2.getInstance).
*/
BOP_Merge2 BOP_Merge2::SINGLETON;
#ifdef BOP_DEBUG
void dumpmesh ( BOP_Mesh *m, bool force )
{
unsigned int nonmanifold = 0;
{
BOP_Edges edges = m->getEdges();
int count = 0;
for (BOP_IT_Edges edge = edges.begin(); edge != edges.end();
++count, ++edge) {
if (!(*edge)->getUsed() && (*edge)->getFaces().size() == 0 ) continue;
BOP_Vertex * v1 = m->getVertex((*edge)->getVertex1());
BOP_Vertex * v2 = m->getVertex((*edge)->getVertex2());
if(v1->getTAG()!= BROKEN || v2->getTAG()!= BROKEN ) {
int fcount = 0;
BOP_Indexs faces = (*edge)->getFaces();
for (BOP_IT_Indexs face = faces.begin(); face != faces.end(); face++) {
BOP_Face *f = m->getFace(*face);
if(f->getTAG()== UNCLASSIFIED) ++fcount;
}
if(fcount !=0 && fcount !=2 ) {
++nonmanifold;
}
}
}
if (!force && nonmanifold == 0) return;
}
if( nonmanifold )
cout << nonmanifold << " edges detected" << endl;
#ifdef BOP_DEBUG
cout << "---------------------------" << endl;
BOP_Edges edges = m->getEdges();
int count = 0;
for (BOP_IT_Edges edge = edges.begin(); edge != edges.end();
++count, ++edge) {
BOP_Vertex * v1 = m->getVertex((*edge)->getVertex1());
BOP_Vertex * v2 = m->getVertex((*edge)->getVertex2());
if(v1->getTAG()!= BROKEN || v2->getTAG()!= BROKEN ) {
int fcount = 0;
BOP_Indexs faces = (*edge)->getFaces();
cout << count << ", " << (*edge) << ", " << faces.size() << endl;
for (BOP_IT_Indexs face = faces.begin(); face != faces.end(); face++) {
BOP_Face *f = m->getFace(*face);
if(f->getTAG()== UNCLASSIFIED) ++fcount;
cout << " face " << f << endl;
}
if(fcount !=0 && fcount !=2 )
cout << " NON-MANIFOLD" << endl;
}
}
BOP_Faces faces = m->getFaces();
count = 0;
for (BOP_IT_Faces face = faces.begin(); face != faces.end(); face++) {
if( count < 12*2 || (*face)->getTAG() != BROKEN ) {
cout << count << ", " << *face << endl;
}
++count;
}
BOP_Vertexs verts = m->getVertexs();
count = 0;
for (BOP_IT_Vertexs vert = verts.begin(); vert != verts.end(); vert++) {
cout << count++ << ", " << *vert << " " << (*vert)->getNumEdges() << endl;
BOP_Indexs edges = (*vert)->getEdges();
for( BOP_IT_Indexs it = edges.begin(); it != edges.end(); ++it) {
BOP_Edge *edge = m->getEdge(*it);
cout << " " << edge << endl;
}
}
cout << "===========================" << endl;
#endif
}
#endif
/**
* Simplifies a mesh, merging its faces.
* @param m mesh
* @param v index of the first mergeable vertex (can be removed by merge)
*/
void BOP_Merge2::mergeFaces(BOP_Mesh *m, BOP_Index v)
{
m_mesh = m;
#ifdef BOP_DEBUG
cout << "##############################" << endl;
#endif
cleanup( );
m_firstVertex = v;
bool cont = false;
// Merge faces
mergeFaces();
do {
// Add quads ...
cont = createQuads();
// ... and merge new faces
if( cont ) cont = mergeFaces();
#ifdef BOP_DEBUG
cout << "called mergeFaces " << cont << endl;
#endif
// ... until the merge is not succesful
} while(cont);
}
void clean_nonmanifold( BOP_Mesh *m )
{
return;
BOP_Edges nme;
BOP_Edges e = m->getEdges();
for( BOP_IT_Edges it = e.begin(); it != e.end(); ++it ) {
BOP_Indexs faces = (*it)->getFaces();
if( faces.size() & ~2 )
nme.push_back(*it);
}
if (nme.size() == 0) return;
for( BOP_IT_Edges it = nme.begin(); it != nme.end(); ++it ) {
if( (*it)->getFaces().size() > 1 ) {
BOP_Indexs faces = (*it)->getFaces();
for( BOP_IT_Indexs face = faces.begin(); face != faces.end(); ++face ) {
MT_Point3 vertex1 = m->getVertex(m->getFace(*face)->getVertex(0))->getPoint();
MT_Point3 vertex2 = m->getVertex(m->getFace(*face)->getVertex(1))->getPoint();
MT_Point3 vertex3 = m->getVertex(m->getFace(*face)->getVertex(2))->getPoint();
if (BOP_collinear(vertex1,vertex2,vertex3)) // collinear triangle
deleteFace(m,m->getFace(*face));
}
continue;
}
BOP_Face *oface1 = m->getFace((*it)->getFaces().front());
BOP_Face *oface2, *tmpface;
BOP_Index first =(*it)->getVertex1();
BOP_Index next =(*it)->getVertex2();
BOP_Index last = first;
unsigned short facecount = 0;
bool found = false;
BOP_Indexs vertList;
#ifdef BOP_DEBUG
cout << " first edge is " << (*it) << endl;
#endif
vertList.push_back(first);
BOP_Edge *edge;
while(true) {
BOP_Vertex *vert = m->getVertex(next);
BOP_Indexs edges = vert->getEdges();
edge = NULL;
for( BOP_IT_Indexs eit = edges.begin(); eit != edges.end(); ++eit) {
edge = m->getEdge(*eit);
if( edge->getFaces().size() > 1) {
edge = NULL;
continue;
}
if( edge->getVertex1() == next && edge->getVertex2() != last ) {
last = next;
next = edge->getVertex2();
break;
}
if( edge->getVertex2() == next && edge->getVertex1() != last ) {
last = next;
next = edge->getVertex1();
break;
}
edge = NULL;
}
if( !edge ) break;
#ifdef BOP_DEBUG
cout << " next edge is " << edge << endl;
#endif
tmpface = m->getFace(edge->getFaces().front());
if( oface1->getOriginalFace() != tmpface->getOriginalFace() )
oface2 = tmpface;
else
++facecount;
vertList.push_back(last);
if( vertList.size() > 3 ) break;
if( next == first ) {
found = true;
break;
}
}
if(found) {
edge = *it;
#ifdef BOP_DEBUG
cout << " --> found a loop" << endl;
#endif
if( vertList.size() == 3 ) {
BOP_Face3 *face = (BOP_Face3 *)m->getFace(edge->getFaces().front());
face->getNeighbours(first,last,next);
} else if( vertList.size() == 4 ) {
BOP_Face4 *face = (BOP_Face4 *)m->getFace(edge->getFaces().front());
face->getNeighbours(first,last,next,last);
} else {
#ifdef BOP_DEBUG
cout << "loop has " << vertList.size() << "verts";
#endif
continue;
}
if(facecount == 1) oface1 = oface2;
next = vertList[1];
last = vertList[2];
if( edge->getVertex2() == next ) {
BOP_Face3 *f = new BOP_Face3(next,first,last,
oface1->getPlane(),oface1->getOriginalFace());
m->addFace( f );
#ifdef BOP_DEBUG
cout << " face is backward: " << f << endl;
#endif
} else {
BOP_Face3 *f = new BOP_Face3(last,first,next,
oface1->getPlane(),oface1->getOriginalFace());
m->addFace( f );
#ifdef BOP_DEBUG
cout << " face is forward: " << f << endl;
#endif
}
}
}
}
/**
* Runs through mesh and makes sure vert/face/edge data is consistent. Most
* importantly:
* (1) mark edges which are no longer used
* (2) remove broken faces from edges
* (3) remove faces from mesh which have a single edge belonging to no other
* face (non-manifold edges)
*/
void BOP_Merge2::cleanup( void )
{
BOP_Edges edges = m_mesh->getEdges();
for (BOP_IT_Edges edge = edges.begin(); edge != edges.end(); ++edge) {
BOP_Indexs faces = (*edge)->getFaces();
for (BOP_IT_Indexs face = faces.begin(); face != faces.end(); ++face) {
BOP_Face *f = m_mesh->getFace(*face);
if(f->getTAG()== UNCLASSIFIED) ;
else (*edge)->removeFace(*face);
}
if( (*edge)->getFaces().size() == 0) (*edge)->setUsed(false);
}
BOP_Vertexs v = m_mesh->getVertexs();
for( BOP_IT_Vertexs it = v.begin(); it != v.end(); ++it ) {
if( (*it)->getTAG() != BROKEN) {
BOP_Indexs iedges = (*it)->getEdges();
for(BOP_IT_Indexs i = iedges.begin();i!=iedges.end();i++)
if( m_mesh->getEdge((*i))->getUsed( ) == false) (*it)->removeEdge( *i );
if( (*it)->getEdges().size() == 0 ) (*it)->setTAG(BROKEN);
}
}
// clean_nonmanifold( m_mesh );
}
/**
* Simplifies a mesh, merging its faces.
*/
bool BOP_Merge2::mergeFaces()
{
BOP_Indexs mergeVertices;
BOP_Vertexs vertices = m_mesh->getVertexs();
BOP_IT_Vertexs v = vertices.begin();
const BOP_IT_Vertexs verticesEnd = vertices.end();
// Advance to first mergeable vertex
advance(v,m_firstVertex);
BOP_Index pos = m_firstVertex;
// Add unbroken vertices to the list
while(v!=verticesEnd) {
if ((*v)->getTAG() != BROKEN) {
mergeVertices.push_back(pos);
}
v++;
pos++;
}
// Merge faces with that vertices
return mergeFaces(mergeVertices);
}
/**
* remove edges from vertices when the vertex is removed
*/
void BOP_Merge2::freeVerts(BOP_Index v, BOP_Vertex *vert)
{
BOP_Indexs edges = vert->getEdges();
BOP_Vertex *other;
for( BOP_IT_Indexs it = edges.begin(); it != edges.end(); ++it) {
BOP_Edge *edge = m_mesh->getEdge(*it);
BOP_Indexs edges2;
if( edge->getVertex1() != v )
other = m_mesh->getVertex( edge->getVertex1() );
else
other = m_mesh->getVertex( edge->getVertex2() );
other->removeEdge(*it);
vert->removeEdge(*it);
}
}
/**
* Simplifies a mesh, merging the faces with the specified vertices.
* @param mergeVertices vertices to test
* @return true if a face merge was performed
*/
bool BOP_Merge2::mergeFaces(BOP_Indexs &mergeVertices)
{
// Check size > 0!
if (mergeVertices.size() == 0) return false;
bool didMerge = false;
for( BOP_Index i = 0; i < mergeVertices.size(); ++i ) {
BOP_LFaces facesByOriginalFace;
BOP_Index v = mergeVertices[i];
BOP_Vertex *vert = m_mesh->getVertex(v);
#ifdef BOP_DEBUG
cout << "i = " << i << ", v = " << v << ", vert = " << vert << endl;
if (v==48)
cout << "found vert 48" << endl;
#endif
if ( vert->getTAG() != BROKEN ) {
getFaces(facesByOriginalFace,v);
switch (facesByOriginalFace.size()) {
case 0:
// v has no unbroken faces (so it's a new BROKEN vertex)
freeVerts( v, vert );
vert->setTAG(BROKEN);
break;
case 2: {
#ifdef BOP_DEBUG
cout << "size of fBOF = " << facesByOriginalFace.size() << endl;
#endif
BOP_Faces ff = facesByOriginalFace.front();
BOP_Faces fb = facesByOriginalFace.back();
BOP_Index eindexs[2];
int ecount = 0;
// look for two edges adjacent to v which contain both ofaces
BOP_Indexs edges = vert->getEdges();
#ifdef BOP_DEBUG
cout << " ff has " << ff.size() << " faces" << endl;
cout << " fb has " << fb.size() << " faces" << endl;
cout << " v has " << edges.size() << " edges" << endl;
#endif
for(BOP_IT_Indexs it = edges.begin(); it != edges.end();
++it ) {
BOP_Edge *edge = m_mesh->getEdge(*it);
BOP_Indexs faces = edge->getFaces();
#ifdef BOP_DEBUG
cout << " " << edge << " has " << edge->getFaces().size() << " faces" << endl;
#endif
if( faces.size() == 2 ) {
BOP_Face *f0 = m_mesh->getFace(faces[0]);
BOP_Face *f1 = m_mesh->getFace(faces[1]);
if( f0->getOriginalFace() != f1->getOriginalFace() ) {
#ifdef BOP_DEBUG
cout << " " << f0 << endl;
cout << " " << f1 << endl;
#endif
eindexs[ecount++] = (*it);
}
}
}
if(ecount == 2) {
#ifdef BOP_DEBUG
cout << " edge indexes are " << eindexs[0];
cout << " and " << eindexs[1] << endl;
#endif
BOP_Edge *edge = m_mesh->getEdge(eindexs[0]);
BOP_Index N = edge->getVertex1();
if(N == v) N = edge->getVertex2();
#ifdef BOP_DEBUG
cout << " ## OK, replace "<<v<<" with "<<N << endl;
#endif
mergeVertex(ff , v, N );
mergeVertex(fb , v, N );
// now remove v and its edges
vert->setTAG(BROKEN);
for(BOP_IT_Indexs it = edges.begin(); it != edges.end();
++it ) {
BOP_Edge *tedge = m_mesh->getEdge(*it);
tedge->setUsed(false);
}
didMerge = true;
}
#ifdef BOP_DEBUG
else {
cout << " HUH: ecount was " << ecount << endl;
}
#endif
}
break;
default:
break;
}
}
}
return didMerge;
}
void BOP_Merge2::mergeVertex(BOP_Faces &faces, BOP_Index v1, BOP_Index v2)
{
for(BOP_IT_Faces face=faces.begin();face!=faces.end();face++) {
if( (*face)->size() == 3)
mergeVertex((BOP_Face3 *) *face, v1, v2);
else
mergeVertex((BOP_Face4 *) *face, v1, v2);
(*face)->setTAG(BROKEN);
#ifdef BOP_DEBUG
cout << " breaking " << (*face) << endl;
#endif
}
}
/*
* Remove a face from the mesh and from each edges's face list
*/
static void deleteFace(BOP_Mesh *m, BOP_Face *face)
{
BOP_Index l2 = face->getVertex(0);
BOP_Faces faces = m->getFaces();
for(int i = face->size(); i-- ; ) {
BOP_Indexs edges = m->getVertex(l2)->getEdges();
BOP_Index l1 = face->getVertex(i);
for(BOP_IT_Indexs it1 = edges.begin(); it1 != edges.end(); ++it1 ) {
BOP_Edge *edge = m->getEdge(*it1);
if( ( edge->getVertex1() == l1 && edge->getVertex2() == l2 ) ||
( edge->getVertex1() == l2 && edge->getVertex2() == l1 ) ) {
BOP_Indexs ef = edge->getFaces();
for(BOP_IT_Indexs it = ef.begin(); it != ef.end(); ++it ) {
if( m->getFace(*it) == face) {
edge->removeFace(*it);
break;
}
}
break;
}
}
l2 = l1;
}
face->setTAG(BROKEN);
}
void BOP_Merge2::mergeVertex(BOP_Face3 *face, BOP_Index v1, BOP_Index v2)
{
BOP_Index next, prev;
face->getNeighbours(v1,prev,next);
// if new vertex is not already in the tri, make a new tri
if( prev != v2 && next != v2 ) {
m_mesh->addFace( new BOP_Face3(prev,v2,next,
face->getPlane(),face->getOriginalFace()) );
#ifdef BOP_DEBUG
cout << "mv3: add " << prev << "," << v2 << "," << next << endl;
} else {
cout << "mv3: vertex already in tri: doing nothing" << endl;
#endif
}
deleteFace(m_mesh, face);
}
void BOP_Merge2::mergeVertex(BOP_Face4 *face, BOP_Index v1, BOP_Index v2)
{
BOP_Index next, prev, opp;
face->getNeighbours(v1,prev,next,opp);
// if new vertex is already in the quad, replace quad with new tri
if( prev == v2 || next == v2 ) {
m_mesh->addFace( new BOP_Face3(prev,next,opp,
face->getPlane(),face->getOriginalFace()) );
#ifdef BOP_DEBUG
cout << "mv4a: add " << prev << "," << next << "," << opp << endl;
#endif
}
// otherwise make a new quad
else {
m_mesh->addFace( new BOP_Face4(prev,v2,next,opp,
face->getPlane(),face->getOriginalFace()) );
#ifdef BOP_DEBUG
cout << "mv4b: add "<<prev<<","<<v2<<","<<next<<","<<opp<<endl;
#endif
}
deleteFace(m_mesh, face);
}
// #define OLD_QUAD
/**
* Simplifies the mesh, merging the pairs of triangles that come frome the
* same original face and define a quad.
* @return true if a quad was added, false otherwise
*/
bool BOP_Merge2::createQuads()
{
BOP_Faces quads;
// Get mesh faces
BOP_Faces faces = m_mesh->getFaces();
// Merge mesh triangles
const BOP_IT_Faces facesIEnd = (faces.end()-1);
const BOP_IT_Faces facesJEnd = faces.end();
for(BOP_IT_Faces faceI=faces.begin();faceI!=facesIEnd;faceI++) {
#ifdef OLD_QUAD
if ((*faceI)->getTAG() == BROKEN || (*faceI)->size() != 3) continue;
for(BOP_IT_Faces faceJ=(faceI+1);faceJ!=facesJEnd;faceJ++) {
if ((*faceJ)->getTAG() == BROKEN || (*faceJ)->size() != 3 ||
(*faceJ)->getOriginalFace() != (*faceI)->getOriginalFace()) continue;
BOP_Face *faceK = createQuad((BOP_Face3*)*faceI,(BOP_Face3*)*faceJ);
if (faceK != NULL) {
// Set triangles to BROKEN
deleteFace(m_mesh, *faceI);
deleteFace(m_mesh, *faceJ);
#ifdef BOP_DEBUG
cout << "createQuad: del " << *faceI << endl;
cout << "createQuad: del " << *faceJ << endl;
cout << "createQuad: add " << faceK << endl;
#endif
quads.push_back(faceK);
break;
}
}
#else
if ((*faceI)->getTAG() == BROKEN ) continue;
for(BOP_IT_Faces faceJ=(faceI+1);faceJ!=facesJEnd;faceJ++) {
if ((*faceJ)->getTAG() == BROKEN ||
(*faceJ)->getOriginalFace() != (*faceI)->getOriginalFace()) continue;
BOP_Face *faceK = NULL;
if((*faceI)->size() == 3) {
if((*faceJ)->size() == 3)
faceK = createQuad((BOP_Face3*)*faceI,(BOP_Face3*)*faceJ);
else
faceK = createQuad((BOP_Face3*)*faceI,(BOP_Face4*)*faceJ);
} else {
if((*faceJ)->size() == 3)
faceK = createQuad((BOP_Face3*)*faceJ,(BOP_Face4*)*faceI);
else
faceK = createQuad((BOP_Face4*)*faceI,(BOP_Face4*)*faceJ);
}
if (faceK != NULL) {
// Set triangles to BROKEN
deleteFace(m_mesh, *faceI);
deleteFace(m_mesh, *faceJ);
#ifdef BOP_DEBUG
cout << "createQuad: del " << *faceI << endl;
cout << "createQuad: del " << *faceJ << endl;
cout << "createQuad: add " << faceK << endl;
#endif
quads.push_back(faceK);
break;
}
}
#endif
}
// Add quads to mesh
const BOP_IT_Faces quadsEnd = quads.end();
for(BOP_IT_Faces quad=quads.begin();quad!=quadsEnd;quad++) m_mesh->addFace(*quad);
return (quads.size() > 0);
}
/**
* Returns a new quad (convex) from the merge of two triangles that share the
* vertex index v.
* @param faceI mesh triangle
* @param faceJ mesh triangle
* @param v vertex index shared by both triangles
* @return a new convex quad if the merge is possible
*/
BOP_Face* BOP_Merge2::createQuad(BOP_Face3 *faceI, BOP_Face3 *faceJ)
{
// Test if both triangles share a vertex index
BOP_Index v;
unsigned int i;
for(i=0;i<3 ;i++) {
v = faceI->getVertex(i);
if( faceJ->containsVertex(v) ) break;
}
if (i == 3) return NULL;
BOP_Face *faceK = NULL;
// Get faces data
BOP_Index prevI, nextI, prevJ, nextJ;
faceI->getNeighbours(v,prevI,nextI);
faceJ->getNeighbours(v,prevJ,nextJ);
MT_Point3 vertex = m_mesh->getVertex(v)->getPoint();
MT_Point3 vPrevI = m_mesh->getVertex(prevI)->getPoint();
MT_Point3 vNextI = m_mesh->getVertex(nextI)->getPoint();
MT_Point3 vPrevJ = m_mesh->getVertex(prevJ)->getPoint();
MT_Point3 vNextJ = m_mesh->getVertex(nextJ)->getPoint();
// Quad test
if (prevI == nextJ) {
if (!BOP_collinear(vNextI,vertex,vPrevJ) && !BOP_collinear(vNextI,vPrevI,vPrevJ) &&
BOP_convex(vertex,vNextI,vPrevI,vPrevJ)) {
faceK = new BOP_Face4(v,nextI,prevI,prevJ,faceI->getPlane(),faceI->getOriginalFace());
faceK->setTAG(faceI->getTAG());
BOP_Index edge;
m_mesh->getIndexEdge(v,prevI,edge);
m_mesh->getVertex(v)->removeEdge(edge);
m_mesh->getVertex(prevI)->removeEdge(edge);
}
}
else if (nextI == prevJ) {
if (!BOP_collinear(vPrevI,vertex,vNextJ) && !BOP_collinear(vPrevI,vNextI,vNextJ) &&
BOP_convex(vertex,vNextJ,vNextI,vPrevI)) {
faceK = new BOP_Face4(v,nextJ,nextI,prevI,faceI->getPlane(),faceI->getOriginalFace());
faceK->setTAG(faceI->getTAG());
BOP_Index edge;
m_mesh->getIndexEdge(v,nextI,edge);
m_mesh->getVertex(v)->removeEdge(edge);
m_mesh->getVertex(nextI)->removeEdge(edge);
}
}
return faceK;
}
/**
* Returns a new quad (convex) from the merge of two triangles that share the
* vertex index v.
* @param faceI mesh triangle
* @param faceJ mesh triangle
* @param v vertex index shared by both triangles
* @return a new convex quad if the merge is possible
*/
BOP_Face* BOP_Merge2::createQuad(BOP_Face3 *faceI, BOP_Face4 *faceJ)
{
// Test if triangle and quad share a vertex index
BOP_Index v;
unsigned int i;
for(i=0;i<3 ;i++) {
v = faceI->getVertex(i);
if( faceJ->containsVertex(v) ) break;
}
if (i == 3) return NULL;
BOP_Face *faceK = NULL;
// Get faces data
BOP_Index prevI, nextI, prevJ, nextJ, oppJ;
faceI->getNeighbours(v,prevI,nextI);
faceJ->getNeighbours(v,prevJ,nextJ,oppJ);
// Quad test
BOP_Index edge;
if (nextI == prevJ) {
if (prevI == nextJ) { // v is in center
faceK = new BOP_Face3(nextJ,oppJ,prevJ,faceI->getPlane(),faceI->getOriginalFace());
faceK->setTAG(faceI->getTAG());
m_mesh->getIndexEdge(v,prevI,edge);
m_mesh->getVertex(v)->removeEdge(edge);
m_mesh->getVertex(prevI)->removeEdge(edge);
m_mesh->getIndexEdge(v,nextI,edge);
m_mesh->getVertex(v)->removeEdge(edge);
m_mesh->getVertex(nextI)->removeEdge(edge);
freeVerts(v, m_mesh->getVertex(v));
} else if (prevI == oppJ) { // nextI is in center
faceK = new BOP_Face3(v,nextJ,oppJ,faceI->getPlane(),faceI->getOriginalFace());
faceK->setTAG(faceI->getTAG());
m_mesh->getIndexEdge(v,nextI,edge);
m_mesh->getVertex(v)->removeEdge(edge);
m_mesh->getVertex(nextI)->removeEdge(edge);
m_mesh->getIndexEdge(prevI,nextI,edge);
m_mesh->getVertex(prevI)->removeEdge(edge);
m_mesh->getVertex(nextI)->removeEdge(edge);
freeVerts(nextI, m_mesh->getVertex(nextI));
}
} else if (nextI == oppJ && prevI == nextJ ) { // prevI is in center
faceK = new BOP_Face3(prevJ,v,oppJ,faceI->getPlane(),faceI->getOriginalFace());
faceK->setTAG(faceI->getTAG());
m_mesh->getIndexEdge(v,prevI,edge);
m_mesh->getVertex(v)->removeEdge(edge);
m_mesh->getVertex(prevI)->removeEdge(edge);
m_mesh->getIndexEdge(nextI,prevI,edge);
m_mesh->getVertex(nextI)->removeEdge(edge);
m_mesh->getVertex(prevI)->removeEdge(edge);
freeVerts(prevI, m_mesh->getVertex(prevI));
}
return faceK;
}
/**
* Returns a new quad (convex) from the merge of two triangles that share the
* vertex index v.
* @param faceI mesh triangle
* @param faceJ mesh triangle
* @param v vertex index shared by both triangles
* @return a new convex quad if the merge is possible
*/
BOP_Face* BOP_Merge2::createQuad(BOP_Face4 *faceI, BOP_Face4 *faceJ)
{
BOP_Face *faceK = NULL;
//
// Test if both quads share a vertex index
//
BOP_Index v;
unsigned int i;
for(i=0;i<4 ;i++) {
v = faceI->getVertex(i);
if( faceJ->containsVertex(v) ) break;
}
if (i == 3) return NULL;
// Get faces data
BOP_Index prevI, nextI, oppI, prevJ, nextJ, oppJ;
faceI->getNeighbours(v,prevI,nextI,oppI);
faceJ->getNeighbours(v,prevJ,nextJ,oppJ);
// Quad test
BOP_Index edge;
if (nextI == prevJ) {
if (prevI == nextJ) { // v is in center
faceK = new BOP_Face4(nextI,oppI,nextJ,oppJ,faceI->getPlane(),faceI->getOriginalFace());
faceK->setTAG(faceI->getTAG());
m_mesh->getIndexEdge(v,prevI,edge);
m_mesh->getVertex(v)->removeEdge(edge);
m_mesh->getVertex(prevI)->removeEdge(edge);
m_mesh->getIndexEdge(v,nextI,edge);
m_mesh->getVertex(v)->removeEdge(edge);
m_mesh->getVertex(nextI)->removeEdge(edge);
freeVerts(v, m_mesh->getVertex(v));
} else if (oppI == oppJ) { // nextI is in center
faceK = new BOP_Face4(v,nextJ,oppJ,prevI,faceI->getPlane(),faceI->getOriginalFace());
faceK->setTAG(faceI->getTAG());
m_mesh->getIndexEdge(v,nextI,edge);
m_mesh->getVertex(v)->removeEdge(edge);
m_mesh->getVertex(nextI)->removeEdge(edge);
m_mesh->getIndexEdge(prevI,nextI,edge);
m_mesh->getVertex(prevI)->removeEdge(edge);
m_mesh->getVertex(nextI)->removeEdge(edge);
freeVerts(nextI, m_mesh->getVertex(nextI));
}
} else if (prevI == nextJ && oppI == oppJ) { // prevI is in center
faceK = new BOP_Face4(v,nextI,oppJ,prevJ,faceI->getPlane(),faceI->getOriginalFace());
faceK->setTAG(faceI->getTAG());
m_mesh->getIndexEdge(v,prevI,edge);
m_mesh->getVertex(v)->removeEdge(edge);
m_mesh->getVertex(prevI)->removeEdge(edge);
m_mesh->getIndexEdge(nextI,prevI,edge);
m_mesh->getVertex(nextI)->removeEdge(edge);
m_mesh->getVertex(prevI)->removeEdge(edge);
freeVerts(prevI, m_mesh->getVertex(prevI));
}
return faceK;
}
/**
* Returns if a index is inside a set of indexs.
* @param indexs set of indexs
* @param i index
* @return true if the index is inside the set, false otherwise
*/
bool BOP_Merge2::containsIndex(BOP_Indexs indexs, BOP_Index i)
{
const BOP_IT_Indexs indexsEnd = indexs.end();
for(BOP_IT_Indexs it=indexs.begin();it!=indexsEnd;it++) {
if (*it == i) return true;
}
return false;
}
/**
* Creates a list of lists L1, L2, ... LN where
* LX = mesh faces with vertex v that come from the same original face
* @param facesByOriginalFace list of faces lists
* @param v vertex index
*/
void BOP_Merge2::getFaces(BOP_LFaces &facesByOriginalFace, BOP_Index v)
{
// Get edges with vertex v
BOP_Indexs edgeIndexs = m_mesh->getVertex(v)->getEdges();
const BOP_IT_Indexs edgeEnd = edgeIndexs.end();
for(BOP_IT_Indexs edgeIndex = edgeIndexs.begin();edgeIndex != edgeEnd;edgeIndex++) {
// For each edge, add its no broken faces to the output list
BOP_Edge* edge = m_mesh->getEdge(*edgeIndex);
BOP_Indexs faceIndexs = edge->getFaces();
const BOP_IT_Indexs faceEnd = faceIndexs.end();
for(BOP_IT_Indexs faceIndex=faceIndexs.begin();faceIndex!=faceEnd;faceIndex++) {
BOP_Face* face = m_mesh->getFace(*faceIndex);
if (face->getTAG() != BROKEN) {
bool found = false;
// Search if we already have created a list for the
// faces that come from the same original face
const BOP_IT_LFaces lfEnd = facesByOriginalFace.end();
for(BOP_IT_LFaces facesByOriginalFaceX=facesByOriginalFace.begin();
facesByOriginalFaceX!=lfEnd; facesByOriginalFaceX++) {
if (((*facesByOriginalFaceX)[0])->getOriginalFace() == face->getOriginalFace()) {
// Search that the face has not been added to the list before
for(unsigned int i = 0;i<(*facesByOriginalFaceX).size();i++) {
if ((*facesByOriginalFaceX)[i] == face) {
found = true;
break;
}
}
if (!found) {
// Add the face to the list
if (face->getTAG()==OVERLAPPED) facesByOriginalFaceX->insert(facesByOriginalFaceX->begin(),face);
else facesByOriginalFaceX->push_back(face);
found = true;
}
break;
}
}
if (!found) {
// Create a new list and add the current face
BOP_Faces facesByOriginalFaceX;
facesByOriginalFaceX.push_back(face);
facesByOriginalFace.push_back(facesByOriginalFaceX);
}
}
}
}
}
/**
* Creates a list of lists L1, L2, ... LN where
* LX = mesh faces with vertex v that come from the same original face
* and without any of the vertices that appear before v in vertices
* @param facesByOriginalFace list of faces lists
* @param vertices vector with vertices indexs that contains v
* @param v vertex index
*/
void BOP_Merge2::getFaces(BOP_LFaces &facesByOriginalFace, BOP_Indexs vertices, BOP_Index v)
{
// Get edges with vertex v
BOP_Indexs edgeIndexs = m_mesh->getVertex(v)->getEdges();
const BOP_IT_Indexs edgeEnd = edgeIndexs.end();
for(BOP_IT_Indexs edgeIndex = edgeIndexs.begin();edgeIndex != edgeEnd;edgeIndex++) {
// Foreach edge, add its no broken faces to the output list
BOP_Edge* edge = m_mesh->getEdge(*edgeIndex);
BOP_Indexs faceIndexs = edge->getFaces();
const BOP_IT_Indexs faceEnd = faceIndexs.end();
for(BOP_IT_Indexs faceIndex=faceIndexs.begin();faceIndex!=faceEnd;faceIndex++) {
BOP_Face* face = m_mesh->getFace(*faceIndex);
if (face->getTAG() != BROKEN) {
// Search if the face contains any of the forbidden vertices
bool found = false;
for(BOP_IT_Indexs vertex = vertices.begin();*vertex!= v;vertex++) {
if (face->containsVertex(*vertex)) {
// face contains a forbidden vertex!
found = true;
break;
}
}
if (!found) {
// Search if we already have created a list with the
// faces that come from the same original face
const BOP_IT_LFaces lfEnd = facesByOriginalFace.end();
for(BOP_IT_LFaces facesByOriginalFaceX=facesByOriginalFace.begin();
facesByOriginalFaceX!=lfEnd; facesByOriginalFaceX++) {
if (((*facesByOriginalFaceX)[0])->getOriginalFace() == face->getOriginalFace()) {
// Search that the face has not been added to the list before
for(unsigned int i = 0;i<(*facesByOriginalFaceX).size();i++) {
if ((*facesByOriginalFaceX)[i] == face) {
found = true;
break;
}
}
if (!found) {
// Add face to the list
if (face->getTAG()==OVERLAPPED) facesByOriginalFaceX->insert(facesByOriginalFaceX->begin(),face);
else facesByOriginalFaceX->push_back(face);
found = true;
}
break;
}
}
if (!found) {
// Create a new list and add the current face
BOP_Faces facesByOriginalFaceX;
facesByOriginalFaceX.push_back(face);
facesByOriginalFace.push_back(facesByOriginalFaceX);
}
}
}
}
}
}
#endif /* BOP_NEW_MERGE */
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